下载地址：http://www.php.net/downloads.php
变化如下：
- Core
- Fixed bug #63111 (is_callable() lies for abstract static method).
- Fixed bug #63093 (Segfault while load extension failed in zts-build).
- Fixed bug #62976 (Notice: could not be converted to int when comparing some builtin classes).
- Fixed bug #61767 (Shutdown functions not called in certain error situation).
- Fixed bug #61442 (exception threw in __autoload can not be catched).
- Fixed bug #60909 (custom error handler throwing Exception + fatal error = no shutdown function).